http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=41886031&subtype=133100&caller=view

Key features supported by S7-1200 CPU firmware V2.2.0 include:

SCL (Structured Control Language)
Download in RUN
New modules are available:

CM 1243-2 AS-i Master
CM 1241 RS422/485
SM 1222 DQ8 RLY Changeover

Required software: STEP 7 V11 SP2 Basic or Professional.

俺马上出差回去了，嘿嘿，手头借了张24M的卡，刷一刷。